Sujatha Mayadunnage Your question reads LULC Maps for Australia.
You can use the ESA CCI landcover data. It is a compositely processed data from different satellite sources such as as MERIS, PROBA-V and ENVISAT ASAR. It is an annual data series from 1992 to 2015 yielding 23 year consecutive data for various analysis. The spatial resolution is 300 m which is equivalent to three football stadiums as a pixel size. That is the limitation. However, it is a global data and Australia is fully captured.
You will need to register to be able to download the data.
Access it here: http://maps.elie.ucl.ac.be/CCI/viewer/download.php